<template>
  <view class="goods-detail-container" v-if="goods_info.goods_name">
    <!-- 轮播图区域 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
      <swiper-item v-for="(item,index) in goods_info.pics" :key="index">
        <image :src="item.pics_big" @click="preview(index)"></image>
      </swiper-item>
    </swiper>
    
    <!-- 商品信息区域 -->
    <view class="goods-info-box">
      <!-- 商品价格 -->
      <view class="price">￥{{goods_info.goods_price}}</view>
      <!-- 商品信息主体区域 -->
      <view class="goods-info-body">
        <!-- 商品名字 -->
        <view class="goods-name">{{goods_info.goods_name}}</view>
        <!-- 收藏 -->
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <!-- 运费 -->
      <view class="yf">快递：免运费</view>
    </view>
    
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    
    <!-- 商品导航组件 --> 
    <view class="goods_nav">
      <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup"  @click="onClick" @buttonClick="buttonClick" />
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        goods_info:{},
        options: [
                {
                    icon: 'shop',
                    text: '店铺',
                    infoColor:"red"
                }, {
                    icon: 'cart',
                    text: '购物车',
                    info: 9
                }],
                buttonGroup: [{
                  text: '加入购物车',
                  backgroundColor: '#ff0000',
                  color: '#fff'
                },
                {
                  text: '立即购买',
                  backgroundColor: '#ffa200',
                  color: '#fff'
                }
                ],
      };
    },
    onLoad(options) {
      const goods_id = options.goods_id // 接收外界传过来的商品ID
      this.getGoodsDetail(goods_id) // 把商品ID作为参数请求商品详情数据
    },
    methods:{
      // 获取商品详情数据
      async getGoodsDetail(goods_id) {
        const {data:res} = await uni.$http.get('/api/public/v1/goods/detail',{goods_id:goods_id})
        if(res.meta.status !== 200) return uni.$showMsg()
        res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g,'<img style="display:block;" ').replace(/webp/g,'jpg')
        this.goods_info = res.message
      },
      // 轮播图图片的点击事件
      preview(index) {
        // 调用 uni.previewImage 方法预览图片
        uni.previewImage({
          current:index, // 预览时，默认显示哪张图片的索引
          // 所有图片url地址的数组，通过map方法循环遍历轮播图数据把所有预览图片的url地址生成一个新数组返回
          urls:this.goods_info.pics.map(x=>x.pics_big) 
        })
      },
      onClick (e) {
        if(e.content.text === '购物车') {
          uni.switchTab({
            url:"/pages/cart/cart"
          })
        }
      },
      buttonClick (e) {
        console.log(e)
        this.options[2].info++
      }
    }
  }
</script>

<style lang="scss">
swiper {
  height: 750rpx;
  image {
    width: 100%;
    height: 100%;
  }
}
  
.goods-info-box {
  padding: 10px;
  padding-right: 0;
  .price {
    color: #C00000;
    font-size: 18px;
    margin: 10px 0;
  }
  .goods-info-body {
    display: flex;
    justify-content: space-between;
    .goods-name{
      font-size: 13px;
      margin-right: 10px;
    }
    .favi {
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      width: 120px;
      font-size: 12px;
      border-left: 1px solid #efefef;
      color: gray;
    }
  }
  .yf {
    font-size: 12px;
    color: gray;
    margin:10px 0
  }
}
.goods_nav {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
}
.goods-detail-container {
  padding-bottom: 50px;
}
</style>
